Welcome to ALLLAND Steel Pipe Co., Ltd.
Welcome to ALLLAND Steel Pipe Co., Ltd.
ALLLAND Steel Pipe Supply
Welcome to ALLLAND Steel Pipe Manufacturing.DIN 2458 ST35.8 Steel Pipe is a carbon steel pipe manufactured with ST35.8 material grade according to DIN 17175 requirements. Although ST35.8 has been replaced by EN 10216-2 P235GH in the current European standard system, it is still widely used for replacement projects and equipment based on traditional DIN specifications. ALLLAND supplies ST35.8 steel pipes for boiler, heat exchanger, pressure piping, and high-temperature industrial applications, with customized dimensions and EN 10204 3.1 certification available.
Alllandsteel is a steel pipe manufacturer based in China with 25 years of experience.
The facility spans 22,000 square meters, represents a RMB 700 million investment, and operates four production lines (JCOE, ERW, SMLS, SSAW) alongside five coating lines.
With an annual production capacity of 250,000 tons, the factory covers specifications ranging from Ø406 to Ø1524 and holds multiple international certifications (API/ASTM/EN/ISO/JIS). Focused on steel pipes, creating value for you!
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DIN 2458 ST35.8 steel pipe is manufactured from ST35.8 low-carbon steel. ST35.8 is a material grade for seamless steel pipes intended for high-temperature pressure applications, as specified by the German DIN 17175 standard; it offers excellent weldability, ductility, and pressure resistance, and is primarily used in high-temperature industrial equipment such as boilers, heat exchangers, and pressure piping.
O.D.:
21.3–219.1 mm
W.T.:
2.0–20 mm
Length:
5.8–12 m, available in fixed or multiple lengths; custom lengths per project requirements.
Production:
ERW / Seamless
Application:
Boiler & Pressure Systems
Equivalent Grade:
EN 10216-2 P235GH
Surface Treatment:
Bare, Painting, Galvanized, Coated (Optional)
Delivery Conditions:
Grade, Specification, Furnace Number, Standard
| Designation | Meaning |
|---|---|
| DIN | German Industrial Standard (Deutsches Institut für Normung) |
| 2458 | Standard specifying welded steel pipe dimensions and technical delivery conditions |
| ST | Stahl (German term for “steel”) |
| 35 | Steel grade designation indicating the material category (approximately related to minimum tensile strength level in the old DIN designation system) |
| .8 | Grade intended for elevated-temperature pressure service |
| Previous DIN Designation | Current EN Standard Grade | Description |
|---|---|---|
| DIN 17175 ST35.8 | EN 10216-2 P235GH | High-temperature pressure steel grade for seamless tubes, widely used in boilers, heat exchangers and pressure equipment |
DIN 2458 ST35.8 Steel Pipe is a carbon steel pipe manufactured with ST35.8 material grade, which was originally specified under DIN 17175 for high-temperature and pressure applications.
Although DIN 17175 ST35.8 has been replaced by EN 10216-2 P235GH in the current European standard system, ST35.8 remains widely requested for replacement projects, maintenance applications, and equipment manufactured according to historical DIN specifications.
ALLLAND supplies ST35.8 steel pipes according to customer requirements, with options for equivalent P235GH material, seamless pipe production, dimensional compliance with DIN 2458, and inspection documentation including EN 10204 3.1 certificates.
| Item | Description |
| Historical Standard | DIN 17175 |
| Current Equivalent | EN 10216-2 P235GH |
| Pipe Dimension Reference | DIN 2458 |
| Material Type | Non-alloy carbon steel |
| Application | Boiler, heat exchanger, pressure piping |
| Current Usage | Replacement projects and legacy DIN specifications |
| Element | Max |
| C | 0.17% |
| Si | 0.35% |
| Mn | 0.80% |
| P | 0.035% |
| S | 0.035% |
Typical dimensions
| Outside Diameter (OD) | Wall Thickness (WT) | Weight (Approx.) | Standard Length |
| 21.3 mm | 2.0 mm | 0.97 kg/m | 5.8–12 m |
| 26.9 mm | 2.0 mm | 1.24 kg/m | 5.8–12 m |
| 33.7 mm | 2.0 mm | 1.57 kg/m | 5.8–12 m |
| 42.4 mm | 2.0 mm | 1.99 kg/m | 5.8–12 m |
| 48.3 mm | 2.0 mm | 2.29 kg/m | 5.8–12 m |
| 60.3 mm | 2.0 mm | 2.89 kg/m | 5.8–12 m |
| 76.1 mm | 2.5 mm | 4.52 kg/m | 5.8–12 m |
| 88.9 mm | 3.2 mm | 6.77 kg/m | 5.8–12 m |
| 101.6 mm | 3.6 mm | 8.70 kg/m | 5.8–12 m |
| 114.3 mm | 3.6 mm | 9.83 kg/m | 5.8–12 m |
| 139.7 mm | 4.0 mm | 13.47 kg/m | 5.8–12 m |
| 168.3 mm | 4.5 mm | 18.18 kg/m | 5.8–12 m |
| 219.1 mm | 6.3 mm | 33.10 kg/m | 5.8–12 m |
Note: DIN 2458 defines the dimensions and tolerances of welded steel pipes, while ST35.8 refers to the material grade originally specified in DIN 17175. Customized dimensions are available according to project requirements.
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Boiler Industry
Boiler tubes
Steam pipelines
Heat Exchanger
Heat exchanger tubes
Thermal systems
Power Generation
Power plant piping
Industrial Pressure Systems
Pressure equipment
| Material | Standard | Application |
| ST35.8 / P235GH | DIN / EN | Boiler and pressure piping |
| ASTM A106 Gr.B | ASTM | High-temperature piping |
| ASTM A53 Gr.B | ASTM | Water, gas and structural use |
| 20# Steel | GB/T | Fluid transportation |
ST35.8 and ASTM A106 Gr.B occupy a similar market position, but ST35.8 leans more towards European standards for boilers and pressure equipment.
Yes. Although DIN 17175 ST35.8 has been replaced by EN 10216-2 P235GH, ST35.8 is still requested for maintenance projects, replacement pipes, and equipment designed according to older DIN specifications.
The modern European equivalent of DIN 17175 ST35.8 is EN 10216-2 P235GH.
No. DIN 2458 mainly specifies welded steel pipe dimensions and tolerances. The ST35.8 material grade was originally defined under DIN 17175.
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